package cn.kgc.itrip.controller;

import cn.kgc.itrip.common.EmptyUtils;
import cn.kgc.itrip.config.AlipayConfig;
import cn.kgc.itrip.pojo.ItripHotelOrder;
import cn.kgc.itrip.service.ailPayService.AliPayService;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.request.AlipayTradePagePayRequest;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

/**
 * @program: love_travel
 * @description: 支付宝支付
 * @author: Mr.Wang
 * @create: 2020-04-06 15:39
 **/

@Controller
@RequestMapping("/api/pay")
public class AliPaymentController {

    @Resource
    private AliPayService aliPayService;


    /**
     * 支付前确定信息的展示
     * @param orderNo
     * @param model
     * @return
     */
    @GetMapping("/prepay/{orderNo}")
    public String prePay(@PathVariable String orderNo, ModelMap model){
        try {
            ItripHotelOrder order = aliPayService.findItripOrderByOrderNo(orderNo);
            if(EmptyUtils.isEmpty(order)){
                return "notfound";
            }
            model.addAttribute("orderNo",order.getOrderNo());
            model.addAttribute("payAmount",order.getPayAmount());
            model.addAttribute("roomId",order.getRoomId());
            model.addAttribute("count",order.getCount());
            model.addAttribute("hotelName",order.getHotelName());
            return "pay";
        }catch (Exception e){
            e.printStackTrace();
            return "error";
        }
    }

    /**
     * 支付页面
     * @param WIDout_trade_no
     * @param WIDsubject
     * @param WIDtotal_amount
     * @param request
     * @param response
     * @throws Exception
     */
    @PostMapping(value = "/pay",produces = "application/xml",consumes = "application/x-www-form-urlencoded")
    public void pay(@RequestParam String WIDout_trade_no,
                    @RequestParam String WIDsubject,
                    @RequestParam String WIDtotal_amount,
                    HttpServletRequest request, HttpServletResponse response) throws Exception{
        //获得初始化的AlipayClient
        AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id,
                AlipayConfig.merchant_private_key, "json", AlipayConfig.charset,
                AlipayConfig.alipay_public_key, AlipayConfig.sign_type);

        //设置请求参数
        AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
        alipayRequest.setReturnUrl(AlipayConfig.return_url);
        alipayRequest.setNotifyUrl(AlipayConfig.notify_url);

        //商户订单号，商户网站订单系统中唯一订单号，必填
        //String out_trade_no = new String(request.getParameter("WIDout_trade_no").getBytes("ISO-8859-1"),"UTF-8");
        //付款金额，必填
        // String total_amount = new String(request.getParameter("WIDtotal_amount").getBytes("ISO-8859-1"),"UTF-8");
        //订单名称，必填
        //String subject = new String(request.getParameter("WIDsubject").getBytes("ISO-8859-1"),"UTF-8");
        //商品描述，可空
        //String body = new String(request.getParameter("WIDbody").getBytes("ISO-8859-1"),"UTF-8");

        alipayRequest.setBizContent("{\"out_trade_no\":\""+ WIDout_trade_no +"\","
                + "\"total_amount\":\""+ WIDtotal_amount +"\","
                + "\"subject\":\""+ WIDsubject +"\","
                //+ "\"body\":\""+ body +"\","
                + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");

        //若想给BizContent增加其他可选请求参数，以增加自定义超时时间参数timeout_express来举例说明
        //alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
        //		+ "\"total_amount\":\""+ total_amount +"\","
        //		+ "\"subject\":\""+ subject +"\","
        //		+ "\"body\":\""+ body +"\","
        //		+ "\"timeout_express\":\"10m\","
        //		+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
        //请求参数可查阅【电脑网站支付的API文档-alipay.trade.page.pay-请求参数】章节

        //请求  返回一个字符串格式的表单
        String result = alipayClient.pageExecute(alipayRequest).getBody();
        System.out.println("result====="+result);

        //输出
        response.setContentType("text/html;charset=utf-8");
        PrintWriter out = response.getWriter();
        out.println(result);
        out.flush();
        out.close();
    }

    /**
     * 同步回调
     * @throws Exception
     */
    @GetMapping("/returnUrl")
    public void returnUrl(HttpServletRequest request,HttpServletResponse response) throws Exception{
        //获取支付宝GET过来反馈信息
        Map<String,String> params = new HashMap<String,String>();
        Map<String,String[]> requestParams = request.getParameterMap();
        for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext();) {
            String name = (String) iter.next();
            String[] values = (String[]) requestParams.get(name);
            String valueStr = "";
            for (int i = 0; i < values.length; i++) {
                valueStr = (i == values.length - 1) ? valueStr + values[i]
                        : valueStr + values[i] + ",";
            }
            //乱码解决，这段代码在出现乱码时使用
            valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
            params.put(name, valueStr);
        }

        //调用SDK验证签名
        boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset,
                AlipayConfig.sign_type);

        //——请在这里编写您的程序（以下代码仅作参考）——
        if(signVerified) {
            //商户订单号
            //String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"),"UTF-8");

            //支付宝交易号
            //String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"),"UTF-8");

            //付款金额
            // String total_amount = new String(request.getParameter("total_amount").getBytes("ISO-8859-1"),"UTF-8");

            //out.println("trade_no:"+trade_no+"<br/>out_trade_no:"+out_trade_no+"<br/>total_amount:"+total_amount);
            response.sendRedirect("/trade/success.jsp");
        }else {
            // out.println("验签失败");
            response.sendRedirect("/trade/failure.jsp");
        }
    }

    @PostMapping("/notifyUrl")
    public void notifyUrl(HttpServletRequest request,HttpServletResponse response) throws Exception{
        //获取支付宝POST过来反馈信息
        Map<String,String> params = new HashMap<String,String>();
        Map<String,String[]> requestParams = request.getParameterMap();
        for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext();) {
            String name = (String) iter.next();
            String[] values = (String[]) requestParams.get(name);
            String valueStr = "";
            for (int i = 0; i < values.length; i++) {
                valueStr = (i == values.length - 1) ? valueStr + values[i]
                        : valueStr + values[i] + ",";
            }
            //乱码解决，这段代码在出现乱码时使用
            //valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
            params.put(name, valueStr);
        }

        System.out.println("=============aaaaaaaaaaaaaa=============");
        //调用SDK验证签名
        boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset,
                AlipayConfig.sign_type);

        System.out.println("=============signVerified============="+signVerified);
        //——请在这里编写您的程序（以下代码仅作参考）——

	/* 实际验证过程建议商户务必添加以下校验：
	1、需要验证该通知数据中的out_trade_no是否为商户系统中创建的订单号，
	2、判断total_amount是否确实为该订单的实际金额（即商户订单创建时的金额），
	3、校验通知中的seller_id（或者seller_email) 是否为out_trade_no这笔单据的对应的操作方（有的时候，一个商户可能有多个seller_id/seller_email）
	4、验证app_id是否为该商户本身。
	*/
        //验证成功
        String receipt = "failure";
        if(signVerified) {
            //商户订单号
            String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"),"UTF-8");

            //支付宝交易号
            String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"),"UTF-8");

            //交易状态
            String trade_status = new String(request.getParameter("trade_status").getBytes("ISO-8859-1"),"UTF-8");

            //付款金额
            String total_amount = new String(request.getParameter("total_amount").getBytes("ISO-8859-1"),"UTF-8");

            String app_id = params.get("app_id");

            System.out.println("=============bbbbbbbbbbb=============");
            //订单的查询
            ItripHotelOrder order = aliPayService.findItripOrderByOrderNo(out_trade_no);
            if(EmptyUtils.isNotEmpty(order)){
                if (Double.valueOf(total_amount) == order.getPayAmount().doubleValue()){
                    if (AlipayConfig.app_id.equals(app_id)){
                        if(trade_status.equals("TRADE_FINISHED")){
                            //判断该笔订单是否在商户网站中已经做过处理
                            //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
                            //如果有做过处理，不执行商户的业务程序
                            order.setPayType(1);
                            order.setOrderStatus(2);
                            order.setTradeNo(trade_no);
                            aliPayService.updateOrderStatus(order);
                            //注意：
                            //退款日期超过可退款期限后（如三个月可退款），支付宝系统发送该交易状态通知
                        }else if (trade_status.equals("TRADE_SUCCESS")){
                            //判断该笔订单是否在商户网站中已经做过处理
                            //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
                            //如果有做过处理，不执行商户的业务程序
                            order.setPayType(1);
                            order.setOrderStatus(2);
                            order.setTradeNo(trade_no);
                            aliPayService.updateOrderStatus(order);
                            //注意：
                            //付款完成后，支付宝系统发送该交易状态通知
                        }
                    }
                }
            }
            receipt = "success";
        }
        //输出
        response.setContentType("text/html;charset=utf-8");
        PrintWriter out = response.getWriter();
        out.println(receipt);
        out.flush();
        out.close();
    }
}
